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Bradford-White Corp
U130T*FRN, Eco Defender warranty
Models:
U130T*FRN
Eco Defender
1
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Install
Thermopile Replacement
Warranty
Left Side of Wire Harness
Resettable Thermal Switch Continuity Testing
a Remove 7/16 nut from bottom of pilot assembly
Service Procedure
necessary precaution to prevent personal injury BURNER CLEANING
Determine Water Temperature Inside Tank
How to
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Contents
Save this manual for future reference
To be performed ONLY by qualified service providers
U1503*FRNU1XR403S*FRN Denotes Warranty Years
The Bradford White
Ultra Low NOx Gas Water Heaters
The Bradford White
How the Safety System Works
INTRODUCTION
How to Use This Manual
Control Status
Service Procedure
LED Status
Probable Cause
Service Procedure
LED Status
Probable Cause
Material left on combustion chamber around opening
Inner Door Removal Procedure
Inner Door Gasket Replacement Procedure
Installation of Inner Door With Gasket
place. DO NOT OVER TIGHTEN SCREWS
Step 15. Replace outer jacket burner access door
CLOSED CIRCUIT THERMOPILE TESTING Honeywell Control
OPEN CIRCUIT THERMOPILE TESTING
Left Side of Wire Harness
THERMOPILE REPLACEMENT
Gas Control Knob Shown In “OFF” Position
Thermopile Position
PILOT/ELECTRODE ASSEMBLY INSPECTION CLEANING AND REPLACEMENT
a Remove 7/16 nut from bottom of pilot assembly
a Primary air openings for blockage. Must be free
Igniter Lead
IGNITER, ELECTRODE TESTING AND REPLACEMENT
see page
Thermal Well Testing
Thermal well testing
Observe heater operation. If control
Determine Water Temperature Inside Tank
Take necessary precaution to prevent personal injury
Sensor Resistance at Various Temperatures
Gas Control & Thermal Well Removal From Water Heater
Gas Control Removal From Thermal Well
Gas Control
Gas Control Assembly to Thermal Well
CHAMBER SENSOR TESTING
Sensor Resistance at Various Temperatures
Step 1. Turn the gas control knob to the “OFF” position
MAIN BURNER Inspection Cleaning and Replacement
necessary precaution to prevent personal injury BURNER CLEANING
DANGER
BURNER CLEANING Cont
CORRECTIVE ACTION
RESETTABLE THERMAL SWITCH CONTINUITY TESTING
PROBABLE CAUSE FOR RESETTABLE THERMAL SWITCH ACTIVATION
PROBABLE CAUSE
DO NOT OVER TIGHTEN SCREWS
RESETTABLE THERMAL SWITCH REPLACEMENT
ScreenLok Flame Arrestor Cleaning
DIP TUBE INSPECTION AND REPLACEMENT
this procedure. Take necessary precaution to prevent personal injury
ANODE INSPECTION AND REPLACEMENT
26 Wire Tie 27 ASSE Approved Mixing Valve Optional 28 Thermopile
11 Outer Door 12 Draft Diverter 13 Complete Burner Assembly
14 RN Burner and Door 15 Flexible Gas Feed Line 16 Pilot Assembly
17 Screw #8-18 x ½ Hex Washer Head 18 Resettable Thermal Switch
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